<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .check-style-unequal-width {

            width: 8px;

            height: 16px;

            border-color: #009933;

            border-style: solid;

            border-width: 0 3px 5px 0;

            transform: rotate(45deg);

        }
    </style>
</head>

<body>
    <div class="check-style-unequal-width"></div>
</body>

</html>